63549196650625 has 45 divisors (see below), whose sum is σ = 92378177716671. Its totient is φ = 43575635376000.

The previous prime is 63549196650623. The next prime is 63549196650679. The reversal of 63549196650625 is 52605669194536.

The square root of 63549196650625 is 7971775.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 31178922948481 + 32370273702144 = 5583809^2 + 5689488^2 .

It is not a de Polignac number, because 63549196650625 - 2¹ = 63549196650623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63549196650623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1395037849 + ... + 1395083401.

Almost surely, 2^{63549196650625} is an apocalyptic number.

63549196650625 is the 7971775-th square number.

63549196650625 is the 3985888-th centered octagonal number.

It is an amenable number.

63549196650625 is a deficient number, since it is larger than the sum of its proper divisors (28828981066046).

63549196650625 is an frugal number, since it uses more digits than its factorization.

63549196650625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91140 (or 45565 counting only the distinct ones).

The product of its (nonzero) digits is 314928000, while the sum is 67.

The spelling of 63549196650625 in words is "sixty-three trillion, five hundred forty-nine billion, one hundred ninety-six million, six hundred fifty thousand, six hundred twenty-five".